(Note: In all relay events for swimmers age 10 & under, the 2nd and 4th swimmer start in the water holding the edge ("in water start" or "IWS") because of shallow depth at one end of pool. For those relays denoted as "All Diving Starts", all swimmers dove from blocks or the side of the pool.

Note: 6 & under records were begun in 2011. Prior records for this age group are unknown.

Note: To convert meter times to yard times, divide by 1.11 (or multiply by .901).

Note:Source spreadsheet attached (Warning: Quickview on iOS devices may show seconds rounded off and fractions as .00; so we recommend using MS Excel to few source spreadsheet).